JP6459650B2 - Glass antenna for automobile - Google Patents

Description

  The present invention relates to a glass antenna for an automobile, and relates to a glass antenna that receives FM radio broadcast waves provided on a rear window glass provided with a heating conductive wire (also referred to as a defogger), and the rear window glass is a hatchback type. The present invention relates to a glass antenna suitable for mounting on an automobile.

  A window glass (rear window glass) provided in a back door of a hatchback type automobile often has a small window glass area due to design restrictions. Therefore, the area | region of the heating filament for ensuring the back view at the time of rainy weather occupies most of the window glass. Therefore, when providing a glass antenna in a rear window glass, it must be provided in the margin part of the peripheral part of a heating filament.

  Since the area of the margin is small, in order to improve the reception gain of the glass antenna, the horizontal and vertical stripes of the antenna disposed around the heating filament are replaced with the heating horizontal line of the heating filament. A heating wire is also used as an antenna by making it close to a strip, a bus bar, etc., and improvement of receiving gain is performed (refer to patent documents 1 etc.).

JP 2009-105665 A

  There is a tendency for cars with a streamlined design to be preferred, and for hatchback-type cars, the vertical dimension of the rear window glass is short. As a result, the margin area of the rear glass has become smaller, and it has become difficult to design a glass antenna for receiving FM radio broadcast waves having a long wavelength. The present invention relates to a glass antenna for an automobile, and relates to a glass antenna that receives FM radio broadcast waves provided on a rear window glass provided with a heating conductive wire (also referred to as a defogger), and the rear window glass is a hatchback type. It is an object of the present invention to provide a glass antenna capable of receiving FM radio broadcast waves with high sensitivity even when attached to an automobile.

The present invention is intended to solve the above problem, that is, provided in a vacant space around the defogger when sufficient space for providing an antenna in the margin of the defogger in the rear window glass of the automobile cannot be secured. An object of the present invention is to make it possible to receive FM radio broadcast waves with high gain even with an antenna.
That is, the glass antenna for an automobile of the present invention is an automobile glass antenna (1) formed on a window glass (2) provided in a hatchback rear door of an automobile, and a plurality of horizontal heating wires (32a to 32z). And an automotive glass antenna (1) for FM radio broadcast wave reception comprising a defogger (3) having a bus bar (31a, 31b) disposed at both ends of the horizontal heating wire (32a-32z). ,
The automotive glass antenna (1)
A first auxiliary horizontal filament (42) extending from the lower end of one side of the bus bar (31a) along the lowermost horizontal heating filament (32z) via a lead wire (41); and the auxiliary horizontal filament (42 And a first auxiliary element (4) having at least one first auxiliary vertical line (43) extending upward in a substantially vertical direction and spaced outward from the bus bar (31a); ,
It extended along the uppermost horizontal heating line (32a) from the upper end of the bus bar (31b) opposite to the bus bar (31a) provided with the first auxiliary element (4) through the lead wire (51). A second auxiliary horizontal line (52) and at least one second auxiliary line connected to the second auxiliary horizontal line and spaced outwardly of the bus bar (31b) and extending downward in a substantially vertical direction A second auxiliary element (5) having a vertical filament (53);
A feeding point (61) provided near the upper part of the bus bar (31a) with the first auxiliary element (4) or near the lower part of the bus bar (31b) with the two auxiliary elements (5), 61) a main vertical element (63) extending from the outside of the bus bar (31a) or (31b) and capacitively coupled to the bus bar (31a) or (31b). And a main element (6) having a main horizontal element (62) extending in a substantially horizontal direction from the feeding point (61).

  The “neighboring” that defines the position where the feeding point (61) is arranged is 3 mm to 30 mm at the shortest distance from the upper part of the bus bar (31a) or the lower part of the bus bar (31b) to the feeding point (61). It points to what is. Moreover, in this invention, when each filament is not defined specially, the distance which does not produce capacitive coupling with an adjacent filament or bus bar, Preferably it shall maintain the distance of 25 mm-50 mm. To do.

  The main function of the defogger (3) is to heat the filament when the heating filament is energized and to remove the fogging of the window. Since the defogger has conductivity, it affects the reception sensitivity of the radio wave receiving antenna depending on its shape and the distance from the radio wave receiving antenna. In the present invention, by providing the auxiliary elements (4) and (5) as described above in the defogger, FM radio broadcast waves can be efficiently received by the defogger. FM broadcast waves have a frequency of 76 to 108 MHz (76 to 90 MHz in Japan) and are relatively long at 3 to 4 m in wavelength. Longer elements are required. In the present invention, since the first auxiliary element (4) and the second auxiliary element (5) are arranged so as to be diagonal to the rectangular defogger (3), the distance of the entire element can be gained. It can be made suitable for receiving FM radio broadcast waves.

  A main element (6) having a main vertical element (63) disposed along the outside of the bus bar and capacitively coupled to the bus bar is provided, and the main element (6), the first auxiliary element (4), the first By providing two auxiliary elements (5), the FM radio broadcast wave received as an electrical signal by the defogger can be transmitted to the FM radio broadcast wave receiving antenna, and the FM radio broadcast wave reception sensitivity can be improved. Succeeded in raising. The main vertical element (63) is also effective in easily receiving vertical polarization.

  The first auxiliary vertical filament (43) and the second auxiliary vertical filament (53) are effective in facilitating reception of vertically polarized waves. In the rear window glass of a hatchback type automobile in which the vertical dimension has to be shortened, this auxiliary vertical line helps to improve the reception sensitivity of the polarization in the vertical direction.

  The first auxiliary horizontal filament (42) and the second auxiliary horizontal filament (52) are effective in improving the reception sensitivity of polarized waves in the horizontal direction.

  The main horizontal element (62) is effective in improving the reception sensitivity of horizontal polarization.

  In the present invention, it is important not to provide auxiliary elements at the upper and lower ends of the bus bar not provided with the first auxiliary element (4) and the second auxiliary element (5). If there is an auxiliary element in the portion, the above-described action of “gaining the distance of the entire element” is less likely to occur, and as a result, the effect of improving the reception sensitivity of FM radio broadcast waves is less likely to occur.

  The glass antenna for automobiles of the present invention can receive FM radio broadcast waves with high sensitivity even if there is little blank space in the defogger. The present invention can be suitably applied to a rear window glass of a hatchback type automobile in which the vertical dimension has to be shortened.

It is a figure which shows the outline of the fundamental structure (when a main element exists in the 2nd auxiliary element side) of the glass antenna (1) of this invention. It is a figure which shows the outline of the structural example of a defogger (3). In a 1st auxiliary element (4), it is a figure which shows the outline of the derivation | leading-out of a horizontal auxiliary filament (42). In a 1st auxiliary element (4), it is a figure which shows the outline of the derivation | leading-out of a horizontal auxiliary filament (42). In a 2nd auxiliary element (5), it is a figure which shows the outline of the derivation | leading-out of a vertical auxiliary filament (53). In a 2nd auxiliary | assistant element (5), it is a figure which shows the outline of the derivation | leading-out of the vertical auxiliary filament (53). It is a figure which shows the outline at the time of the 3rd auxiliary | assistant element (7) being equipped in the bus-bar (31b) side. In the glass antenna (1) of this invention, it is a figure which shows the outline in case a main element (6) exists in the 1st auxiliary element (4) side. It is a figure which shows the outline of the derivation | leading-out of a vertical auxiliary filament (43) in a 1st auxiliary element (4). It is a figure which shows the outline of the derivation | leading-out of a vertical auxiliary filament (43) in a 1st auxiliary element (4). It is a figure which shows the outline at the time of the 3rd auxiliary | assistant element (7) being equipped in the bus-bar (31a) side. 1 is a diagram showing an outline of a glass antenna 1 of Example 1. FIG. FIG. 3 is a diagram showing an outline of a glass antenna 1 of Example 2. It is a figure which shows the outline of the glass antenna of the comparative example 1. It is a figure which shows the outline of the glass antenna of the comparative example 2. FIG. It is a figure which shows the antenna characteristic of an Example and a comparative example.

  The glass antenna for automobiles of the present invention will be described with reference to the drawings. FIG. 1 is an outline of the glass antenna 1 of the present invention. When the main element (6) is on the second auxiliary element (5) side, FIGS. 2 to 7 show the outline of each element of the glass antenna 1 of another embodiment. It is shown. Moreover, FIG. 8 is the outline of the glass 1, and when the main element (6) is on the first auxiliary element (4) side, FIGS. 9 to 11 show the elements of the glass antenna (1) according to another aspect. FIG. 12 to FIG. 15 show examples and glass antennas of comparative examples, and FIG. 16 shows antenna characteristics of the examples and comparative examples. The glass antenna (1) of FIGS. 1-15 has shown the aspect seen from the vehicle inside.

1. About the defogger The defogger 3 is formed in a rectangular shape on the window glass 2 (this window glass is provided on the hatchback-type rear door of the automobile). The main surface preferably occupies an area of 50 to 90%, more preferably 60 to 80%. Bus bars 31a and 31b are provided on the left and right sides of the defogger 3, and the width of each bus bar is preferably set to 5 to 50 mm. The bus bar 31 may have a rectangular or spindle shape. In the case of a spindle-shaped planar shape, the width of the bus bar is the width of the central portion in the vertical direction. The length of the bus bar 31 is preferably 50 to 90% with respect to the vertical direction of the window glass 2.

In the hatchback type rear door, the area of the window glass is set to 0.6 to 1.2 m ² , and the length in the vertical direction is often set to 0.7 to 1.0 m. It will be relatively small. In order to secure a rear view when traveling in the rain, etc., it is necessary to make the area of the defogger 3 and the proportion in the vertical direction as before, and as a result, the space for providing the antenna element is very narrow It will be a thing.

  The window glass 2 is three-dimensionally bent, and a glass having a curved shape having a convex shape toward the outside of the vehicle is used. As shown in FIGS. It is preferable that a black frame 21 colored with black ceramic is formed. The bus bars 31a, 31b, the auxiliary elements 4, 5, the main element 6 and the like may be arranged in the black frame 21. When the window glass 2 having such a structure is attached to the automobile, these parts are It can be difficult for the user of the vehicle to see.

  The bus bars 31 are connected by a plurality of horizontal heating filaments 32. The uppermost portion is the horizontal heating filament 32a, and the lowermost portion is the horizontal heating filament 32z. The thickness of each heating filament is preferably 0.1 to 2 mm. The distance between a certain heating wire 32 and the heating wire 32 adjacent to the heating wire 32 is preferably 30 to 70 mm, more preferably from the viewpoint of securing a rear view when traveling in rainy weather and from the viewpoint of the rear visibility. Is 40-60 mm. Moreover, it is preferable that the space | interval of each heating filament 32 is made uniform.

  Further, as illustrated in FIG. 2, the defogger 3 may include at least one vertical heating wire 33 connected to the horizontal heating wire 32. When the vertical heating wire 33 is provided, the reception sensitivity of the polarization in the vertical direction is improved. In the present invention, since the defogger 3 includes the auxiliary elements 4 and 5, the defogger 3 has an asymmetric shape. In this case, the vertical heating wire 33 is connected to the horizontal heating wire 32 other than the horizontal heating wire 32z in order to improve the efficiency of developing the antifogging property of the window when the heating wire is energized and heated. It is preferable to do.

  Terminals (not shown) are installed on the bus bar 31 by a method such as soldering. When the window glass 2 is incorporated in the vehicle body, it is connected to the power supply means by wiring.

2. Auxiliary Element The defogger 3 includes auxiliary elements 4 and 5. The first auxiliary element 4 is connected to the bus bar from the lower end of the bus bar 31a via the lead wire 41, and is connected to the first auxiliary horizontal line 42 extending along the horizontal heating line 32z, and outside the bus bar 31a. And a first auxiliary vertical line 43 extending upward in a substantially vertical direction. Since the electric field is more concentrated in the bus bar portion than in the wire portion, the reception sensitivity of the FM broadcast wave is improved when the lead wire 41 is drawn out from the horizontal heating wire when it is drawn out from the bus bar 31a. be able to. The lower end region described above is preferably the bottom side of the bus bar 31a, but a region 10 mm from the bottom side, more preferably 5 mm may be included in the lower end region. In the drawing, the lead line 41 extends in the vertical direction, but may be extended in the horizontal direction.

  The second auxiliary element 5 is connected to the bus bar from the upper end of the bus bar 31b through the lead wire 51, and extends from the second auxiliary horizontal line 52 along the horizontal heating line 32a to the outside of the bus bar. And a second auxiliary vertical filament 53 extending upward in a substantially vertical direction. Since the electric field of the bus bar portion is more concentrated than that of the wire portion, when the lead wire 51 is drawn from the horizontal heating wire, the reception sensitivity of the FM broadcast wave is improved when the lead wire 51 is drawn from the horizontal heating wire. be able to. The upper end region described above is preferably the upper side of the bus bar 31b, but a region of 10 mm from the upper side, more preferably 5 mm, may also be included in the upper end region. In the drawing, the lead line 51 extends in the vertical direction, but may be extended in the horizontal direction.

  The lengths of the auxiliary vertical filaments 43 and 53 and the auxiliary horizontal filaments 42 and 52 are appropriately adjusted in consideration of the wavelength length of the FM broadcast wave to be received and the size of the defogger 3, and the length of each filament is It is preferable to set so that it may be about 300-700 mm. Further, the distance between the auxiliary horizontal filament 42 and the heating filament 32z and the distance between the auxiliary horizontal filament 52 and the heating filament 32a are preferably 3 mm to 15 mm. By setting the distance, the heating horizontal filament 32a and the auxiliary horizontal filament 52, the heating horizontal filament 32z and the auxiliary horizontal filament 42 element are linked by capacitive coupling, and the reception sensitivity of the glass antenna of the present invention can be improved. it can.

  Further, the auxiliary horizontal filaments 42 and 52 may be bent and further folded (FIG. 3 illustrates the case of the first auxiliary element 4, and the case of bending and folding is applied to the second auxiliary element 5. In this case, the example of FIG. 3 becomes a wiring rotated by 180 degrees, and a plurality of wires may be provided (FIG. 4 illustrates the case of the first auxiliary element 4 and a plurality of auxiliary horizontal filaments. When the case of providing is applied to the second auxiliary element 5, the example of FIG. 4 is rotated 180 degrees. When the filament is bent and folded, or when a plurality of filaments are provided, the distance between the filaments in parallel relation is preferably 10 to 60 mm.

  When the element extending in the vertical direction and closest to the vertical auxiliary filaments 43 and 53 is the bus bar 31 or the third auxiliary element 7, the distance from the closest element is preferably 3 to 3. 15 mm. By setting the distance, the vertical auxiliary filaments 43 and 53 and the bus bar 31 or the third auxiliary element 7 can be linked by capacitive coupling, and the reception sensitivity of the glass antenna of the present invention can be improved.

  When the element extending in the vertical direction and closest to the vertical auxiliary filaments 43 and 53 is the main vertical element 63, the distance from the closest element is preferably 3 to 15 mm. . In this case, it is preferable that the length of the filaments facing the main vertical element 62 is 10 to 200 mm. By setting the distance, the electric signal of the FM broadcast wave received by the defogger 3 can be received by the main vertical element 63 by capacitive coupling, and the reception sensitivity of the glass antenna of the present invention can be improved.

  The auxiliary horizontal filaments 42 and 52 may be bent, and may be provided with folded filaments or a plurality of filaments. FIG. 5 illustrates a case where the vertical auxiliary filament 53 is folded back. When such an aspect is applied to the auxiliary vertical filament 43, the example of FIG. 5 is rotated 180 degrees, and the example is as follows. It is illustrated as in FIG. FIG. 6 illustrates the case where a plurality of vertical auxiliary filaments 53 are provided, and when such an embodiment is applied to the auxiliary vertical filaments 43, the example of FIG. 6 is rotated 180 degrees. An example is illustrated as in FIG. When the filament is bent and folded, or when a plurality of filaments are provided, the distance between the filaments in parallel relation is preferably 10 to 60 mm.

  On the bus bar side where the main element 6 is disposed, an L-shaped third auxiliary element 7 that is capacitively coupled to the main vertical element 62 may be provided. FIG. 7 illustrates a case where the third auxiliary element 7 is on the bus bar 31b side. When the third auxiliary element 7 is on the bus bar 31a side, the example of FIG. 7 is rotated 180 degrees, and the example is illustrated in FIG. The third auxiliary element 7 is a main vertical element 62 having a filament extending in the horizontal direction from the upper end of the bus bar 31b (or the lower end of the bus bar 31a in the case of being on the first auxiliary element 4 side) and then bent. The strips are stretched in the vertical direction so as to be in parallel with each other. The distance between the filaments is preferably 3 to 15 mm, and the length of the opposing filaments is preferably 10 to 200 mm. Since the third auxiliary element 7 and the main vertical element are capacitively coupled, the FM radio broadcast wave received as an electric signal by the defogger is easily transmitted to the main element 6, and the FM radio broadcast wave reception sensitivity is improved. Succeeds in improving

3. Regarding the Main Element A configuration when the main element 6 is arranged on the bus bar 31b side will be described. The main element 6 is disposed along the outside of the bus bar near the lower portion of the bus bar 31b, the main vertical element 63 that is capacitively coupled to the bus bar, and extends substantially horizontally from the feed point. And a main horizontal element 62 . The main vertical element 63 may be connected to the feeding point 61 via the lead element 64 as shown in FIG. 1 or may be extended directly from the feeding point 61.

  A terminal (not shown) is installed at the feeding point 61 by a method such as soldering. When the window glass 2 is incorporated in the vehicle body, the window glass 2 is connected to a radio receiver, an amplifier, and the like through a feeding point, a terminal, and a core wire. The length of each line of the main element 6 is appropriately adjusted in consideration of the wavelength length of the FM broadcast wave to be received and the size of the defogger 3. The length of the main vertical element 63 is preferably 100 to 500 mm. The main vertical element 63 and the bus bar 31b are arranged substantially in parallel, and the distance between them is preferably 3 to 15 mm so that the main vertical element 63 and the bus bar 31b can be capacitively coupled. Of the bus bar 31b, the main vertical element 62, and the main vertical element 62, the length of the portion that is capacitively coupled to the bus bar 31b is set so that the FM radio broadcast wave that is received by the defogger and becomes an electric signal can be easily transmitted to the main element 6. , Preferably 50 mm to 450 mm, more preferably 150 to 400 mm. The length of the horizontal element 62 is preferably 50 to 400 mm in the direction extending from the feeding point 61 to the inside of the glass.

  The configuration in which the main element 6 is disposed on the bus bar 31a side is obtained by rotating the configuration in the case of being disposed on the bus bar 31b side by 180 degrees, and an example thereof is illustrated in FIG.

  In the present invention, the defogger stripes, the bus bars, and the main element stripes described above can be formed by printing on a glass plate surface using a conductive paste such as a silver paste and firing.

Hereinafter, more specific examples of the present invention will be described by way of examples.
Example 1
FIG. 12 shows an outline of the antenna pattern according to the first embodiment of the present invention (a mode viewed from the vehicle interior side). The window glass 2 is a three-dimensionally bent glass used for hatchback type rear doors, and has a curved shape having a convex shape toward the outside of the vehicle, and a black frame 21 colored with black ceramic at the peripheral edge thereof. Is formed. The bus bars 31a, 31b, the auxiliary elements 4, 5, and the main element 6 are arranged in the black frame 21, and when the window glass 2 is attached to the automobile, these parts cannot be visually recognized by a vehicle user or the like. . The size of the window glass 2 was 590 mm in the longest portion in the vertical direction and 1250 mm in the longest portion in the horizontal direction, and was used in a bent shape for a vehicle.

  The dimensions of each component in this example were set as follows. In addition, the width | variety of each filament was 0.5 mm. The bus bar 3, the auxiliary elements 4, 5, and the main element 6 are formed by printing a silver paste on the surface of the window glass 2 and baking it. A connector terminal (not shown) is joined to the feeding point 61 by soldering, a core wire is attached to the connector, the glass antenna 1 and the radio receiver (not shown) are joined via the core, and the radio wave receiver The reception sensitivity of FM broadcast waves was measured. The results are shown in FIG.

<About Defogga 3>
Bus bars 31a and 31b: 15 mm wide and 285 mm long (both bus bars are rectangular and have the same dimensions)
Length of horizontal heating wire 32: 980 mm
Distance between horizontal heating wires 32: 35 mm
<About auxiliary element 4>
Lead wire 41 length: 20 mm
Auxiliary horizontal filament 42 length: 450 mm
Length of vertical auxiliary wire 43: 530mm
Distance between vertical auxiliary wire 43 and bus bar 31a: 10 mm
<About auxiliary element 5>
Lead wire 51 length: 10 mm
Length of auxiliary horizontal filament 52: 190mm
Length of vertical auxiliary filament 53: 200mm
Distance between vertical auxiliary filament 53 and bus bar 31b: 30 mm
<About main element 6>
The shape of the feeding point 61: a rectangular shape with a base of 10 mm and a height of 20 mm
The shortest distance between the lower end of the bus bar 31b and the uppermost side of the feeding point 61: 45 mm
Length of main vertical element 63: 290mm
Distance between main vertical element 63 and bus bar 31b: 10 mm
Length of horizontal element 62: 375mm

Example 2
FIG. 13 shows an outline of the antenna pattern according to the second embodiment of the present invention (a mode viewed from the vehicle interior side). In the present embodiment, the main element 6 was the same as the first embodiment except that the shortest distance between the upper end of the bus bar 31a and the lowermost side of the feeding point 61 was set to 10 mm. As for the glass antenna 1 of Example 2, the antenna characteristic equivalent to Example 1 was acquired.

Example 3
Example 3 was the same as Example 1 except that an L-shaped third auxiliary element 7 as shown in FIG. 7 was provided and the auxiliary element 7 and the second auxiliary element 5 were set as follows. As for the glass antenna 1 of Example 3, the antenna characteristic equivalent to Example 1 was acquired.
<About auxiliary element 5>
Lead wire 51 length: 10 mm
Length of auxiliary horizontal filament 52: 190mm
Length of vertical auxiliary filament 53: 200mm
Distance between vertical auxiliary filament 53 and bus bar 31b: 30 mm
<About the third auxiliary element 7>
Stretching length from the right corner of the upper end of the bus bar 31b to the right side in the horizontal direction: 30 mm
Stretching length in the vertical direction: 350 mm
Length of the part facing the vertical auxiliary element 62: 160 mm

Comparative Example 1
FIG. 14 shows an outline of the antenna pattern of Comparative Example 1 (a mode viewed from the vehicle interior side). This comparative example was the same as Example 1 except that the lead wire 41 was pulled out from the upper end of the bus bar 31a, that is, the auxiliary elements 4 and 5 were both formed from the upper end of the bus bar. FIG. 16 shows the measurement result of the FM broadcast wave reception sensitivity.

  As shown in this result, the glass antenna of the present invention has good reception sensitivity in the FM frequency band and is more uniform in the FM frequency band of Japan, 76 MHz to 90 MHz than the glass antenna of the comparative example. It was found that gain was obtained.

Comparative Example 2
FIG. 15 shows an outline of the antenna pattern of Comparative Example 2 (a mode viewed from the vehicle interior side). In this comparative example, it was the same as Example 1 except that the T-shaped auxiliary element 8 was provided from the upper end of the bus bar 31a. The glass antenna 1 of Comparative Example 2 had the same antenna characteristics as Comparative Example 1.

DESCRIPTION OF SYMBOLS 1 Glass antenna 2 Window glass 21 Black frame 3 Deformer 31a, b Bus bar 32 Horizontal heating filament 32a Horizontal heating filament 32z of the uppermost side Horizontal heating filament 4 of the lowest side 4 1st auxiliary | assistant element 41 Pull-out filament 42 Auxiliary horizontal filament 43 Auxiliary Vertical line 5 Second auxiliary element 51 Lead line 52 Auxiliary horizontal line 53 Auxiliary vertical line 6 Main element 61 Feed point 62 Main horizontal element 63 Main vertical element 64 Drawer element 7 Third auxiliary element

Claims (4)

A glass antenna (1) for an automobile formed on a window glass (2) provided on a hatchback rear door of an automobile, a plurality of horizontal heating filaments (32a to 32z) and the horizontal heating filaments (32a to 32z) An automotive glass antenna (1) for receiving FM radio broadcast waves comprising a defogger (3) having bus bars (31a, 31b) disposed at both ends of
The automotive glass antenna (1)
A first auxiliary horizontal filament (42) extending from the lower end of one side of the bus bar (31a) along the lowermost horizontal heating filament (32z) via a lead wire (41); and the auxiliary horizontal filament (42 And a first auxiliary element (4) having at least one first auxiliary vertical line (43) extending upward in a substantially vertical direction and spaced outward from the bus bar (31a); ,
It extended along the uppermost horizontal heating line (32a) from the upper end of the bus bar (31b) opposite to the bus bar (31a) provided with the first auxiliary element (4) through the lead wire (51). A second auxiliary horizontal line (52) and at least one second auxiliary line connected to the second auxiliary horizontal line and spaced outwardly of the bus bar (31b) and extending downward in a substantially vertical direction A second auxiliary element (5) having a vertical filament (53);
A feeding point (61) provided near the upper part of the bus bar (31a) with the first auxiliary element (4) or near the lower part of the bus bar (31b) with the two auxiliary elements (5), 61) a main vertical element (63) extending from the outside of the bus bar (31a) or (31b) and capacitively coupled to the bus bar (31a) or (31b). And a main element (6) having a main horizontal element (62) extending in a substantially horizontal direction from the feeding point (61) ,
A glass antenna for an automobile, wherein no auxiliary element is provided at upper and lower ends of the bus bar not provided with the first auxiliary element (4) and the second auxiliary element (5) . The glass antenna for an automobile according to claim 1, wherein the main vertical element (63) is capacitively coupled to the auxiliary vertical wire (43) or the auxiliary vertical wire (53). At least one selected from the group consisting of the first auxiliary element (4) and the second auxiliary element (5) is horizontally extended from the upper end portion of the bus bar (31b) or the lower end portion of the bus bar (31a) and bent. 3. An automobile according to claim 1 or 2, further comprising an L-shaped element (7) comprising a linearly elongated strip so as to be parallel to the main vertical element (62). Glass antenna. The defogger has at least one vertical heating wire, and the heating wire is connected to a horizontal heating wire other than the lowest horizontal heating wire. The glass antenna for motor vehicles in any one.